Abstract: An ion chromatography method was developed for the determination of 14 organic acids in vinegar and related products by?conductivity detection. The chromatographic separation was performed on a Dionex Ion Pac AS11-HC column with gradient elution using KOH as the eluent at a flow rate of 1.5 mL/min. Lactic acid, acetic acid, propionic acid, formate, butyrate, pyruvate, iso-valproic acid, pentarate, adipate, succinic acid, tartrate, ketoglutarate, oxalic acid, and citric acid were separated and quantified in 35 min. The optimized method was validated with respect to linearity, precision, accuracy, and limits of detection and quantification. The applicability of the present method has been demonstrated for the determination of organic acids in different vinegar samples.

Key words: organic acids; vinegar; vinegar products; ion chromatography